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hwlcd4
LCD status display system for Hauptwerk
virtual pipe organ
* user’s guide *
1. Introduction
The hwlcd4 is compact single-/dual-display module, especially designed for using with
Hauptwerk 4 or any other application that supports Hauptwerk’s original System Exclusive messages
format. It can control one or two standard 2x16 LCD panels, each displaying various
parameters/information, coming from Hauptwerk. In addition, there is RGB full-color LED with userassignable function per each of LCD panels.
The user can re-configure at any moment all user-configurable parameters by means of simple
programming utility, available for free download. The configuration data is uploaded via specific SysEx
message described in Appendix A.
The communication between hwlcd4 and the World goes thru standard MIDI input and output.
The unit requires external power supply of 12V AC/DC.
Any information below related to Hauptwerk has been taken from the original Hauptwerk
User Guide.
2. Firmware
The firmware of hwlcd4 includes three separate software modules, running independently and
simultaneously, each processing specific stream of MIDI messages in real time. The user can choose
which part of which stream is to be displayed by each of LCD lines separately.
These firmware modules are:
 Hauptwerk Status Monitor module
Hauptwerk reports its status using specific System Exclusive messages (message code 0x10,
0x1a, 0x1b, described in details in Hauptwerk User Manual), allowing monitoring on 55 various
parameters. All these parameters are continuously tracked by the Status Monitor Module and are
available for display. User decides which parameter on which available LCD display line will appear. Only
one parameter can be displayed per line at a time.
There are up to 4 additional user-defined static strings which can be displayed on user-selected
line on displays so that users can define their own labels for displayed parameters.
Since each of the physical LCD modules has RGB LED, user can set the function of each of
these LEDs separately. They can be used for indicating certain Hauptwerk parameters (like clipping
parameters) by color code. They can be used for displaying the color code carried with text message
(read below) or they can be even set to emit static user-selectable color (1 out of 8 Hauptwerk-defined
colors).
 Dual Hauptwerk Text Panel module
Two virtual Hauptwerk display panels (Primary and Secondary) are continuously tracking and
recognizing the Hauptwerk text messages carried by specific System Exclusive messages (message code
0x01). Each of these virtual display panels has user-assignable ID (0-127) so that it registers the proper
text messages addressed to respective Hauptwerk LCD panel ID.
The received text messages are internally buffered in 4x 16-character text buffers (two for the
Primary and two for the Secondary panel). The content of each of these buffers is available for display
on any available physical LCD line.
The RGB LEDs installed on each of the LCD panels can be used for displaying the color code,
carried by same MIDI message, for additional visualization.
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 MIDI Monitor module
In this module, every MIDI message including Channel, System Common, Realtime and SysEx
message is monitored and parsed in real time. The results of parsing for most recent 4 messages are
internally buffered in 4x 16-character buffers and each of these buffers content can be displayed on any
of available physical LCD lines. The information of MIDI Monitor is displayed in alphanumeric format,
without time stamps. Following are few examples of typical MIDI messages as displayed by MIDI
Monitor:
NOn:c01n032v127
NOf:c01n032v127
CCg:c02t007v100
CCg:c02t007v102r
PCg:c03p045
PWl:c01l059m032
Cat:c05p069
PAt:c08n036p077
SysEx[00016b]EOX
Active Sensing
Tune Request
System Reset
Note On, Channel 0, Note 32, Velocity 127
Note Off, Channel 0, Note 32, Velocity 127
Control Change, Channel 1, Controller 7, Value 100
Control Change, Channel 1, Controller 7, Value 100, Running Status
Control Change, Channel 1, Controller 7, Value 100
Pitch Wheel, Channel 1, LS byte 59, MS byte 32
Channel Aftertouch, Channel 5, Pressure 69
Poly/Key Aftertouch, Chanel 8, Note 36, Pressure 37
System Exclusive, body 16 bytes
Active Sensing (realtime)
Tune Request (system common)
System Reset (realtime)
The MIDI Monitor module supports Running Status (indicated with “r” at the end of the line,
where present). NoteOn message with velocity 0 is displayed as NoteOn and not as NoteOff.
3. User-programming
hwlcd4 is available in two forms: basic and extended. The basic form consists of Main board
(controller) and 2x16 character LCD display stacked over it. The extended form features Main board
with stacked LCD display plus Extension board with another 2x16 LCD display stacked over it.
Extension module is connected to Main module via 16-way ribbon cable. In further description the
respective LCD displays will be referred to as Main LCD and Extension LCD, meaning the real physically
available LCD displays. Similarly, we will use Main RGB and Extension RGB, meaning respective RGB
LEDs.
Each of lines on each of available physical LCD display can be set separately to show userselected parameter or data from any of available firmware modules described above.
Each of RGB LEDs can be set separately to indicate Hauptwerk parameters (where available) in
color, with no respect of what is being displayed on proper LCD display.
This way user can set both LCD displays to function as 4-line MIDI monitor, or function as two
separate Hauptwerk text displays with attached RGB LEDs, or function as 4 separate displays, showing
variable names and values in text or numbers with two separate RGB LEDs, indicating variable's value in
color code, in any combination.
The software configuration tool named hwlcd4set is available for free download from our site
www.midiboutique.com. Following is short description of all user-selectable parameters:
Primary HW text panel ID: the ID of the first available virtual text panel. While Hauptwerk
supports 14-bit number, hwlcd4 supports only 7-bit (0..127) ID. Normally is expected that each
available panel is set for different ID, but it is still possible to set more than one to be responding to
same ID, if necessary;
Secondary HW text panel ID: the ID for the secondary virtual text panel;
User String#1: User-assignable string to be used as statically displayed text (label);
User String#2: User-assignable string to be used as statically displayed text (label);
User String#3: User-assignable string to be used as statically displayed text (label);
User String#4: User-assignable string to be used as statically displayed text (label);
Main LD Top line Program: Defines what will be displayed on top line of Main LCD display;
Main LCD Bottom line Program: Defines what will be displayed on bottom line of Main LCD
display;
Extension LCD Top line Program: Defines what will be displayed on top line of Extension
LCD display;
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Extension LCD Bottom line Program: Defines what will be displayed on bottom line of
Extension LCD display;
Main RGB Program: Defines what will be indicated by Main RGB LED;
Extension RGB Program: Defines what will be indicated by Extension RGB LED.
The list of available programs for LCD lines and RGB LEDs is shown in Appendix B.
The step-by step instruction for use of hwlcd4set utility is shown in Appendix C.
4. Connection and use
The connection diagrams for Setup and Use are shown in Appendix D.
When used as part of Hauptwerk system, hwlcd4 is inserted between MIDI output of the
computer running Hauptwerk software and the other equipment listening for Hauptwerk MIDI messages
(if any). Hwlcd4 will retransmit the MIDI messages byte-by byte without any altering.
It requires power from external power supply rated for 12V AC/DC, capable to source 150mA or
more (with back light on and RGB LEDs lit in white).
When initially powered, each of available LDC displays will display the product name and
firmware version information:
MGB hwlcd4-m
v.1.1
MGB hwlcd4-x
v.1.1
After 1s timeout it will display the numbers of current programs per each line and LED, giving
visual feedback to user of what will be displayed:
MainTop:060 LED:
MainBot:061 056
MainExt:062 LED:
MainExt:063 056
After another 2s timeout displays get clear and the unit is ready for use.
There is 2-pin connector (marked BL) on the back of each module, allowing user to switch
on/off the back light by jumper, or use external switch for controlling the back light
For indicating the power and MIDI traffic there are green and red SMD LEDs installed on the
back side. The green one will be lit while there is power supplied, the red will be flashing per each
received/transmitted MIDI byte. The power must be applied on 2-pole screw terminal.
The MIDI connection is done by 3-pin and 2-pin connectors (marked MIDI out/MIDI in).
DIN5 sockets are not included and can be ordered separately where/if needed.
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5. Technical parameters
Table 1. hwlcd4 technical parameters
Parameter
Value
Power supply voltage
9-12 AC/DC
Without back light: 50
With back light: 150
All standard and all Hauptwerk
specific System Exclusive messages
for status/text display
Power supply current
Recognized MIDI
messages
Unit
mA
Any received
-
User-programmable
Yes, by MGB-specific SysEx message
-
Back light
Yes
8.0x3.5x3.3 Main
8.0x3.5x3.3 Extension
67 Main
61 Extension
Weight
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Adapter or transformer
-
Retransmitted MIDI
messages
Size
Comment
V
cm
g
The unit is MIDI-transparent
Software setup utility
(Windows) available for free
download
User-selectable
3.1”x1.4”x1.3” approx.
3.1”x1.4”x1.3” approx.
2.4 oz.
2.2 oz
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Appendix A. Recognized System Exclusive messages
Note: All MIDI data numbers are shown in hexadecimal notation!
hwlcd4 programming message format:
Byte 1: 0xF0 – SyEx (system exclusive message start)
Byte 2: 0x00
- mandatory
Byte 3: 0x21
- manufacturer ID LSB (MGB)
Byte 4: 0x7F
- manufacturer ID MSB (MGB)
Byte 5: 0x11
- device ID (hwlcd4)
Byte 6: 0x00
- device sub-ID (message type: Settings upload)
Byte 7: 0x00..0x7F - Main LCD top line Program
Byte 8: 0x00..0x7F - Main LCD bottom line Program
Byte 9: 0x00..0x7F - Extension LCD top line Program
Byte 10: 0x00..0x7F - Extension LCD bottom line Program
Byte 11: 0x00..0x7F - Main RGB LED Program
Byte 12: 0x00..0x7F - Extension RGB LED Program
Byte 13: 0x00..0x7F - Primary HW text panel ID
Byte 14: 0x00..0x7F - Secondary HW text panel ID
Bytes 15-30: User String #1 – 16 ASCII (7-bit) character codes
Bytes 31-46: User String #2 – 16 ASCII (7-bit) character codes
Bytes 47-62: User String #3 – 16 ASCII (7-bit) character codes
Bytes 63-77: User String #4 – 16 ASCII (7-bit) character codes
Byte 79: 0x00 – spare/not used
Byte 80: 0xF7 – EOX (end of system exclusive message)
Hauptwerk LCD panel 2x18 text message format:
Byte 1: 0xF0 – SyEx (system exclusive message start)
Byte 2: 0x7D - manufacturer ID (Milan Digital Audio)
Byte 3: 0x01 - message type code for Hauptwerk LCD output message
Byte 4: 0x00..0x7F - destination panel unique ID LSB (7-bit)
Byte 5: 0x00..0x7F - destination panel unique ID MSB (7-bit)-ignored by hwlcd4
Byte 6: color code 0-127 (0=off/black, 1=white, 2=red, 3=green,
4=yellow, 5=blue, 6=magenta, 7=cyan, others-ignored by hwlcd4)
Bytes 7-38: the 32 ASCII (7-bit) bytes for the text to display
Byte 39: 0xF7 – EOX (end of system exclusive message)
Hauptwerk 7-bit unsigned integer/Boolean variable status message format :
Byte 1: 0xF0 – SyEx (system exclusive message start)
Byte 2: 0x7D - manufacturer ID (Milan Digital Audio)
Byte 3: 0x1B - message type code for Hauptwerk 7-bit
unsigned integer variable status message
Byte 4: variable ID (see list below)
Byte 5: 0x00..0x7F - variable value (0-127 for integer value or
1/0 for representing Boolean True/False values)
Byte 6: 0xF7 – EOX (end of system exclusive message)
Hauptwerk 28-bit signed integer variable status message format:
Byte 1: 0xF0 – SyEx (system exclusive message start)
Byte 2: 0x7D - manufacturer ID (Milan Digital Audio)
Byte 3: 0x1A - message type code for Hauptwerk 28-bit
signed integer variable status message
Byte 4: variable ID (see list below)
Byte 5: variable value byte 1 (most significant 7 bits)
Byte 6: variable value byte 2
Byte 7: variable value byte 3
Byte 8: variable value byte 4 (least significant 7 bits)
Byte 9: 0xF7 – EOX (end of system exclusive message)
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Hauptwerk 16-character string variable status message format:
Byte 1: 0xF0 – SyEx (system exclusive message start)
Byte 2: 0x7D - manufacturer ID (Milan Digital Audio)
Byte 3: 0x10 - message type code for Hauptwerk
string variable status message
Byte 4: variable ID (see list below).
Bytes 6-20: 16 ASCII (7-bit) character codes
Byte 21: 0xF7 – EOX (end of system exclusive message)
Table 2. Hauptwerk Status variables IDs:
Var #
Var Name
Type
0
CurrOrganShortName
String
16 chars
1
CuedFavOrganNum
7-bit unsigned integer
1..32
2
CuedFavOrganShortName
String
16 chars
3
LastOrganShortName
String
16 chars
4
CurrCombSetShortName
String
16 chars
5
CuedFavCombSetNum
7-bit unsigned integer
1..32
6
CuedFavCombSetShortName
String
16 chars
7
CurrTemperShortName
String
16 chars
8
CuedFavTemperNum
7-bit unsigned integer
1..32
9
CuedFavTemperShortName
String
16 chars
10
FloatingDiv1RouteNum
7-bit unsigned integer
1..4
11
FloatingDiv1KbdShortNameList
String
16 chars
12
FloatingDiv2RouteNum
7-bit unsigned integer
1..4
13
FloatingDiv2KbdShortNameList
String
16 chars
14
FloatingDiv3RouteNum
7-bit unsigned integer
1..4
15
FloatingDiv3KbdShortNameList
String
16 chars
16
FloatingDiv4RouteNum
7-bit unsigned integer
1..4
17
FloatingDiv4KbdShortNameList
String
16 chars
18
FloatingDiv5RouteNum
7-bit unsigned integer
1..4
19
FloatingDiv5KbdShortNameList
String
16 chars
20
CurrCombStepperFrameNum
28-bit signed integer
0..999
21
CuedCombStepperFrameBankNum
28-bit signed integer
0..990
22
CurrMasterGeneralNum
7-bit unsigned integer
1..20
23
LastTriggeredMasterRegObjType
7-bit unsigned integer
1..4
24
CurrMasterCrescNum
7-bit unsigned integer
1..4
25
CuedMasterCrescStage
7-bit unsigned integer
0..31
26
TransposerIncSemitones
28-bit signed integer
-12..+12
27
OrganBasePitchHz
Floating-point
0.0..13421772.7
28
MasterTuningIncCents
28-bit signed integer
-200..+200
29
OrganAudioLevelTrimDecibels
Floating-point
-24.0..+24.0
30
PolyphonyLimitSetting
28-bit signed integer
256..32768
31
SampleRateHz
28-bit signed integer
0..134217727
32
LatencyMs
Floating-point
0.0 to 13421772.7
33
IsSetterModeOn
Boolean
0/1(F/T)
34
IsScopeModeOn
Boolean
0/1(F/T)
35
IsRecordingAudio
Boolean
0/1(F/T)
36
IsRecordingMIDI
Boolean
0/1(F/T)
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37
IsPlayingMIDI
Boolean
0/1(F/T)
38
IsOrganReady
Boolean
0/1(F/T)
39
IsInErrorState
Boolean
0/1(F/T)
40
ProgressIndicatorPct
7-bit unsigned integer
0..100
41
MasterOutputLevelCCPct
7-bit unsigned integer
0..100
42
FloatingDiv1ExprPedCCPct
7-bit unsigned integer
0..100
43
FloatingDiv2ExprPedCCPct
7-bit unsigned integer
0..100
44
FloatingDiv3ExprPedCCPct
7-bit unsigned integer
0..100
45
FloatingDiv4ExprPedCCPct
7-bit unsigned integer
0..100
46
FloatingDiv5ExprPedCCPct
7-bit unsigned integer
0..100
47
MasterCrescPedCC
7-bit unsigned integer
0..31
48
AudioLevelClipping
7-bit unsigned integer
0..2
49
PolyphonyClipping
7-bit unsigned integer
0..2
50
CPUClipping
7-bit unsigned integer
0..2
51
RAMClipping
7-bit unsigned integer
0..2
52
CurrObjShortNameAllTypes
String
16 chars
53
CuedFavNumAllTypes
7-bit unsigned integer
1..32
54
CuedFavShortNameAllTypes
String
16 chars
55
AllTypesObjType
7-bit unsigned integer
1..3
Note: For more detailed information about Hauptwerk SysEx messages and Status
variables please refer the Hauptwerk User Manual. The most up-to date version ofthis
document is always available for download on their site www.hauptwerk.com.
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Appendix B. List of supported programs for LCD lines and RGB LEDs
Table 3. hwlcd4 LCD line programs
Prog#
The line displays:
Data format/range
0
HW variable #0: CurrOrganShortName
string
1
HW variable #1: CuedFavOrganNum
unsigned int
2
HW variable #2: CuedFavOrganShortName
string
3
HW variable #3: LastOrganShortName
string
4
HW variable #4: CurrCombSetShortName
string
5
HW variable #5: CuedFavCombSetNum
unsigned int
6
HW variable #6: CuedFavCombSetShortName
string
7
HW variable #7: CurrTemperShortName
string
8
HW variable #8: CuedFavTemperNum
unsigned int
9
HW variable #9: CuedFavTemperShortName
string
10
HW variable #10: FloatingDiv1RouteNum
unsigned int
11
HW variable #11: FloatingDiv1KbdShortNameList
string
12
HW variable #12: FloatingDiv2RouteNum
unsigned int
13
HW variable #13: FloatingDiv2KbdShortNameList
string
14
HW variable #14: FloatingDiv3RouteNum
unsigned int
15
HW variable #15: FloatingDiv3KbdShortNameList
string
16
HW variable #16: FloatingDiv4RouteNum
unsigned int
17
HW variable #17: FloatingDiv4KbdShortNameList
string
18
HW variable #18: FloatingDiv5RouteNum
unsigned int
19
HW variable #19: FloatingDiv5KbdShortNameList
string
20
HW variable #20: CurrCombStepperFrameNum
signed int
21
HW variable #21: CuedCombStepperFrameBankNum
signed int
22
HW variable #22: CurrMasterGeneralNum
unsigned int
23
HW variable #23: LastTriggeredMasterRegObjType
unsigned int(to string)
24
HW variable #24: CurrMasterCrescNum
unsigned int(to char)
25
HW variable #25: CuedMasterCrescStage
unsigned int
26
HW variable #26: TransposerIncSemitones
signed int
27
HW variable #27: OrganBasePitchHz
float
28
HW variable #28: MasterTuningIncCents
signed int
29
HW variable #29: OrganAudioLevelTrimDecibels
float
30
HW variable #30: PolyphonyLimitSetting
signed int
31
HW variable #31: SampleRateHz
signed int
32
HW variable #32: LatencyMs
float
33
HW variable #33: IsSetterModeOn
Boolean(to string)
34
HW variable #34: IsScopeModeOn
Boolean(to string)
35
HW variable #35: IsRecordingAudio
Boolean(to string)
36
HW variable #36: IsRecordingMIDI
Boolean(to string)
37
HW variable #37: IsPlayingMIDI
Boolean(to string)
38
HW variable #38: IsOrganReady
Boolean(to string)
39
HW variable #39: IsInErrorState
Boolean(to string)
40
HW variable #40: ProgressIndicatorPct
unsigned int
41
HW variable #41: MasterOutputLevelCCPct
unsigned int
42
HW variable #42: FloatingDiv1ExprPedCCPct
unsigned int
43
HW variable #43: FloatingDiv2ExprPedCCPct
unsigned int
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44
HW variable #44: FloatingDiv3ExprPedCCPct
unsigned int
45
HW variable #45: FloatingDiv4ExprPedCCPct
unsigned int
46
HW variable #46: FloatingDiv5ExprPedCCPct
unsigned int
47
HW variable #47: MasterCrescPedCC
unsigned int
48
HW variable #48: AudioLevelClipping
unsigned int
49
HW variable #49: PolyphonyClipping
unsigned int
50
HW variable #50: CPUClipping
unsigned int
51
HW variable #51: RAMClipping
unsigned int
52
HW variable #52: CurrObjShortNameAllTypes
string
53
HW variable #53: CuedFavNumAllTypes
unsigned int
54
HW variable #54: CuedFavShortNameAllTypes
string
55
HW variable #55: AllTypesObjType
unsigned int
56
User string#1
string
57
User string#2
string
58
User string#3
string
59
User string#4
string
60
MIDI Monitor line#0 (most up to date)
string
61
MIDI Monitor line#1
string
62
MIDI Monitor line#2
string
63
MIDI Monitor line#3 (least
64
Primary HW text panel, Top Line
string
65
Primary HW text panel, Bottom Line
string
66
Secondary HW text panel, Top Line
string
67
Secondary HW text panel, Bottom Line
string
empty line
n.a.
68-127
up to date)
string
Table 4 . hwlcd4 RGB-LED programs
Prog#
Displays
Data format/range
off
n.a.
33
HW variable #33: IsSetterModeOn
False:Red, True:Green
34
HW variable #34: IsScopeModeOn
False:Red, True:Green
35
HW variable #35: IsRecordingAudio
False:Red, True:Green
36
HW variable #36: IsRecordingMIDI
False:Red, True:Green
37
HW variable #37: IsPlayingMIDI
False:Red, True:Green
38
HW variable #38: IsOrganReady
False:Red, True:Green
39
HW variable #39: IsInErrorState
False:Red, True:Green
off
n.a.
48
HW variable #48: AudioLevelClipping
0:Green,1:Yellow,2:Red
49
HW variable #49: PolyphonyClipping
0:Green,1:Yellow,2:Red
50
HW variable #50: CPUClipping
0:Green,1:Yellow,2:Red
51
HW variable #51: RAMClipping
0:Green,1:Yellow,2:Red
0-32
40-47
52-55
off
n.a.
56
Color#0
Black (off)
57
Color#1
White
58
Color#2
Red
59
Color#3
Green
60
Color#4
Yellow
61
Color#5
Blue
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62
Color#6
Magenta
63
Color#7
Cyan
64
Primary HW text panel, Color Code
unsigned int (to color)
65
off
66
Secondary HW text panel, Color Code
unsigned int (to color)
off
n.a.
67-127
Factory preset:
Unless other requested upon order, the unit ships factory configured as follows:
-
Main LCD, Bottom Line: Program #60 (MIDI Monitor line#0);
Main LCD, Top Line: Program #61 (MIDI Monitor line#1);
Extension LCD, Bottom Line: Program #62 (MIDI Monitor line#2);
Extension LCD, Top Line: Program #63 (MIDI Monitor line#3);
Main RGB: Program#57 (Color#1 - White);
Extension RGB: Program#57 (Color#1 - White);
Primary HW text panel ID:0;
Secondary HW text panel ID:1.
NOTE: Factory settings may differ from above preset in certain cases.
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Appendix B. Step-by step instruction for use of hwlcd4set utility
The hwlcd4set (Windows only) software utility is easy-to-use free-downloadable application that
does not need any installation and registration. Just download, unpack in separate folder and run it. Its
user interface is straightforward, clearly depicting the steps that must be followed during hwlcd4 setup
procedure.
Step 0: Learn what is hwlcd4. Read the available
documentation, including this User Manual. For additional
information press “Read...” button which will display brief
information about hwlcd4.
Step 1. Connect and power the hwlcd4 unit. Press “See
how...” button to see the wiring diagrams for setup and
use. For setup procedure the MIDI input of hwlcd4 must
be connected to the MIDI output of PC, running the
hwlcd4set software. The MIDI output of hwlcd4 should
not be connected to anything, to avoid possible MIDI
loops. The power should be applied to power screw
terminal. Allow 3 seconds for hwlcd4 to initialize.
Step 2. Choose the MIDI output port. The Drop-down list
will show all available virtual and hardware MIDI out ports.
Choose the hardware port to which the hwlcd4 is
attached.
Step 3. Set all user-defined parameters. All of parameters
will be updated at once and you cannot modify only
certain parameters. Be sure to have correct values in all
fields. Primary HW text panel ID is the ID that will be used
for the first virtual Hauptwerk display panel (LCD line
programs 64 and 65, RGB program 64). Secondary HW
text panel ID is the ID that will be used for the secondary
virtual Hauptwerk display panel (LCD line programs 66 and
67, RGB program 66). User String#1..#4 are the strings that will be used for LCD line programs
56..59.
Step 4. Set program for each available LCD line, following Table 3. The program defines what will be
displayed on this line. This could be static label (user string) or dynamic string (Hauptwerk text) or
variable value in numeric format etc. Extension lines can be programmed even if no extension is present
at the moment and is going to be connected later.
Step 5. Set program for each available RGB LED following Table 4. Only those of Hauptwerk that allow
color coding as well as few Boolean variables are supported.
Step 6. Press “Set it up!” button. All above parameters will be uploaded into hwlcd4 and will be
memorized permanently in non-volatile memory. Each of available LCD display will show the following
message:
Config. changed!
Resetting...
After 2 seconds the hwlcd4 will reset per description shown in chapter 4.Connection and Use .
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hwlcd4
MIDI Gadgets Boutique
Appendix C. Wiring diagrams for hwlcd4
This document © 2012 Largonet Ltd. All rights reserved.
“MIDI Gadgets Boutique”, “MGB” and “hwlcd4” are trademarks of Largonet Ltd.
“Hauptwerk”, “Hauptwerk Virtual Pipe Organ”, “Milan Digital Audio” and the
Hauptwerk logo are trademarks of Milan Digital Audio LLC.
“Windows” is registered trademark of Microsoft Inc.
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